What did Dalton's atomic theory teach? A. The smallest unit of matter is the atom.
B. Atoms can be split into even smaller particles.
C. All matter comes from one kind of atom.
D. All science can be explained by the existence of atoms.

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Classify this reaction: 2al+n2-> aln.